Spatial profile of the brightest NiI line (λ3458 Å) observed with UVES on September 4. The measured surface brightness (SB; normalized to one at the photocenter) is plotted as a function of the projected nucleocentric distance, p, in arcsec. The red line represents SB ∝ p⁻¹ convolved with a 1.5" full-width-at-half-maximum Gaussian to account for the seeing and tracking imperfections.